10.4.2 Time-of-day specifications

Org mode checks each agenda item for a time-of-day specification. The
time can be part of the timestamp that triggered inclusion into the
agenda, for example as in ‘<2005-05-10 Tue 19:00>’. Time
ranges can be specified with two timestamps, like
‘<2005-05-10 Tue 20:30>--<2005-05-10 Tue 22:15>’.

In the headline of the entry itself, a time(range) may also appear as
plain text (like ‘12:45’ or a ‘8:30-1pm’). If the agenda
integrates the Emacs diary (see Weekly/daily agenda), time
specifications in diary entries are recognized as well.

For agenda display, Org mode extracts the time and displays it in a
standard 24 hour format as part of the prefix. The example times in
the previous paragraphs would end up in the agenda like this:

8:30-13:00 Arthur Dent lies in front of the bulldozer
12:45...... Ford Prefect arrives and takes Arthur to the pub
19:00...... The Vogon reads his poem
20:30-22:15 Marvin escorts the Hitchhikers to the bridge

If the agenda is in single-day mode, or for the display of today, the
timed entries are embedded in a time grid, like